/**
 * JS using for h-application
 * @author huytbt
 * @date 2012-04-01
 * @version 1.0
 */

!function ($) {
	$(function(){
		// fix sub nav on scroll
		var $win = $(window)
		  , $nav = $('.subnav')
		  , navTop = $('.subnav').length && $('.subnav').offset().top - 40
		  , isFixed = 0

		processScroll()

		$win.on('scroll', processScroll)

		function processScroll() {
		  var i, scrollTop = $win.scrollTop()
		  if (scrollTop >= navTop && !isFixed) {
		    isFixed = 1
		    $nav.addClass('subnav-fixed')
		  } else if (scrollTop <= navTop && isFixed) {
		    isFixed = 0
		    $nav.removeClass('subnav-fixed')
		  }
		}
	})
}(window.jQuery)
